Results 11 to 20 of about 206,251 (288)
Evaluation of Bearing Voltage Reduction in Electric Machines by Using Insulated Shaft and Bearings
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020 Bearing voltages and corresponding currents in electric machines driven by pulse width modulation (PWM) converters with fast switching and high dv/dt can cause premature bearing failures. This paper evaluates the bearing voltage reduction by using insulated shafts and bearings.
Peng Han +4 more
openaire +2 more sources
Polyterthiophenes incorporating 3,4-difluorothiophene units : application in organic field-effect transistors [PDF]
, 2010 Two terthiophenes bearing core fluorinated thienyl units have been synthesised as potential semiconductor materials for organic field-effect transistors.
Crouch, David J. +4 more
core +1 more source
PM fractional machines adopting bonded magnets: effect of different magnetizations on the energetic performance [PDF]
, 2012 The adoption of Permanent Magnets in small brushless machines for automotive applications is becoming frequent. Some research on bonded magnets is being carried on to substitute the ferrites.
Ferraris, Luca +3 more
core +1 more source
Performance of a self-lifting linear air contact [PDF]
, 2007 An investigation into the performance of a self-levitating linear air bearing that functions on the squeeze film principle was conducted and a detailed set of results describing its floating characteristics at various operating parameters is presented ...
Stolarski, T A, Woolliscroft, S P
core +1 more source
Shock and Vibration, 2017 Rotor stability and rotation accuracy, which are highly dependent on the dynamic coefficients of supporting hybrid bearings, are two important issues of high-speed water-lubricated spindles.
Lin Wang, Xianzhi Xiong, Hua Xu
doaj +1 more source
Motor Bearing Damage Induced by Bearing Current: A Review
Machines, 2022 The occurrence of the motor shaft voltage and bearing current caused by the inverter will aggravate bearing damage and lead to the premature failure of bearings.
Jiaojiao Ma +4 more
doaj +1 more source
A portable load cell for in-situ ore impact breakage testing [PDF]
, 2002 This paper discusses the design and characterisation of a short, and hence portable impact load cell for in-situ quantification of ore breakage properties under impact loading conditions.
Banini, George, Bourgeois, Florent
core +1 more source
Running performance of an aerodynamic journal bearing with squeeze film effect [PDF]
, 2013 Results of theoretical and experimental studies concerning the performance of an aerodynamic journal bearing which running is assisted by squeeze film ultrasonic levitation (SFUL) are presented in this paper.
Ha +13 more
core +1 more source
IEEE Access, 2021 Compared with silicon (Si) IGBTs, silicon carbide (SiC) MOSFETs have much faster switching speeds and high switching frequency operation capability, enabling compact and high-efficiency motor drive systems.
Yipu Xu +4 more
doaj +1 more source
Novel Bearing Current Suppression Approach in Doubly-Fed Induction Generators
IEEE Access, 2019 Doubly-fed induction generators (DFIGs) are widely used in the wind power generation systems. However, due to the use of the power electronic devices, such as insulated gate bipolar transistor (IGBT), it is inevitable to generate a non-zero common mode ...
Ruifang Liu +3 more
doaj +1 more source